Use border-box box-sizing
Use border-box box-sizing

By using border-box box-sizing, padding and borders do
not need to be deducted from widths.

Bootstrap 3 sets box-sizing globally to border-box, so
quick-switcher either needs to set the box-sizing explicitly
so things look decent with Bootstrap 2 or 3 (or none at all).

lightster/quick-switcher,lightster/quick-switcher,lightster/quick-switcher